i have already applied for the ADF Gap year with the army and there wasn't a single question regarding homeschooling. there were questions asking when will/did you finish school etc. but thats it so i assume it should be fine if you still get your ATAR.
wow you asked a lot of questions haha. just go onto the ADF website, they should be able to answer all of your questions. from what i know im pretty sure there are jobs not available to women. which is pretty unfair but just how it is. and i think you should be able to make calls most nights but...